All names: WD 0324+738, 2MASS J03301339+7401583, 03302+7401, NLTT 10953, WD 0324+73, LP 31-140, USNO-B1.0 1640-00036182, WDS J03302+7402B, TIC 137394931, WDJ033013.42+740158.15, J0330+7401, Gaia EDR3 544718680539607680, Gaia DR2 544718680539607680, Gaia DR3 544718680539607680, EGGR 385, UCAC3 329-17134, PM J03302+7401, ** LDS 1572B, G 221-10, LP 31-40, LSPM J0330+7401
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 30 14.42 (0.03) | 03 30 14.39 (0.04) | 03 30 14.42 | 03 30 13.42 (0.03) | 03 30 14.39 | 03 30 11.33 | ||||||||
| Declination | 74 01 53.38 (0.04) | 74 01 53.53 (0.05) | 74 01 53.38 | 74 01 58.15 (0.04) | 74 01 53.53 | 74 02 00.96 | ||||||||
| Spectral type | DC | DC | DC | DC | DC7 | DC7 | ||||||||
| Effective temperature | [K] | 7660.0 (40) | 8260.0 | 7977.0 | 5170.0 (381) | 4650.0 (50) | 7600.0 (61) | |||||||
| log(g) | [cgs] | 7.93 (0.01) | 8.20 | 8.11 | 7.89 (0.3) | 7.10 (0.4) | 7.94 (0.01) | |||||||
| Mass | [M☉] | 0.538 (0.008) | 0.722 | 0.646 | 0.51 (0.1) | 0.19 (0.1) | 0.543 (0.01) | |||||||
| log(Luminosity) | [L☉] | -3.94 | -3.77 (0.1) | |||||||||||
| Cooling age | [Gyr] | 1.1900 | 1.3550 | 1.2960 | 1.9700 (0.7) | |||||||||
| log(H/He) | -3.6 | |||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(N/He) | ||||||||||||||
| log(O/He) | ||||||||||||||
| log(Na/He) | ||||||||||||||
| log(Mg/He) | ||||||||||||||
| log(Al/He) | ||||||||||||||
| log(Si/He) | ||||||||||||||
| log(P/He) | ||||||||||||||
| log(S/He) | ||||||||||||||
| log(Cl/He) | ||||||||||||||
| log(Sc/He) | ||||||||||||||
| log(Ti/He) | ||||||||||||||
| log(V/He) | ||||||||||||||
| log(Cr/He) | ||||||||||||||
| log(Mn/He) | ||||||||||||||
| log(Fe/He) | ||||||||||||||
| log(Co/He) | ||||||||||||||
| log(Ni/He) | ||||||||||||||
| log(Cu/He) | ||||||||||||||
| log(Zn/He) | ||||||||||||||
| log(Ga/He) | ||||||||||||||
| log(Ge/He) | ||||||||||||||
| log(Sr/He) | ||||||||||||||
| Parallax | [mas] | 18.51 (0.05) | 18.49 (0.06) | 18.49 (0.06) | 25.00 (4) | 25.00 (4) | 18.51 | 18.51 (0.05) | 18.49 (0.06) | 26.00 (3) | ||||
| Distance | [pc] | 54.03 (0.1) | 54.08 (0.2) | 54.10 (0.2) | 40.00 (8) | 40.00 (6) | 54.03 | 54.03 (0.1) | 54.10 (0.2) | 38.46 (4) | ||||
| Composition | He | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 257.7758915 (0.04) | 257.747 (0.08) | 257.776 (0.04) | 257.7469539 | |||||||||
| Proper motion (declination) | [mas/yr] | -297.7422311 (0.05) | -297.74 (0.1) | -297.742 (0.05) | -297.7397948 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | yes | |||||||||||||
| B magnitude | 18.95 | 18.02 | ||||||||||||
| V magnitude | 17.68 | 16.46 | ||||||||||||
| R magnitude | 16.91 | 16.89 | ||||||||||||
| I magnitude | 16.29 | |||||||||||||
| J magnitude | 16.47 (0.1) | 16.47 (0.1) | ||||||||||||
| H magnitude | 16.18 (0.2) | 16.18 (0.2) | ||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | ||||||||||||||
| r magnitude | ||||||||||||||
| i magnitude | ||||||||||||||
| z magnitude | ||||||||||||||
| G magnitude | 16.77 (0.004) | 16.79 | 16.77 | 16.77 (0.003) | 16.79 | |||||||||
| BP magnitude | 16.88 (0.004) | 16.88 | 16.88 | |||||||||||
| RP magnitude | 16.57 (0.006) | 16.57 | 16.57 | |||||||||||
| Pan g magnitude | 16.89 (0.003) | 16.89 (0.003) | ||||||||||||
| Pan r magnitude | 16.84 (0.003) | 16.84 (0.003) | ||||||||||||
| Pan i magnitude | 16.92 (0.005) | 16.92 (0.005) | ||||||||||||
| Pan z magnitude | 17.01 (0.006) | 17.01 (0.006) | ||||||||||||
| Pan y magnitude | 17.06 (0.009) | 17.06 (0.009) | ||||||||||||
| E(B-V) | 0.002 | |||||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.